哈大铁路客运专线桥梁、路基沉降变形曲线收敛规律研究  

Study on the Patterns of Settlement and Deformation Curve Convergence of Bridge and Roadbed on Harbin-Dalian Passenger Dedicated Line

作　　者：王基全 

机构地区：[1]哈大铁路客运专线有限公司,沈阳110002

出　　处：《铁道标准设计》2012年第5期10-13,共4页Railway Standard Design

基　　金：铁道部科技研究计划(2008G06)

摘　　要：通过对哈大铁路客运专线桥梁和路基约5万个沉降观测点、200万实测数据所表现出的变形规律,通过建立数学模型,进行回归分析,对桥梁、路基6～8个月沉降变形收敛趋势、沉降量变化情况,以及路基堆载、超载沉降变化情况等进行分析、研究,以了解哈大客运专线铁路桥梁和路基沉降曲线收敛规律,研究主要结论为:(1)桥梁、路基恒载后6个月,沉降已基本稳定,相关指标也满足规范要求;(2)桥梁摩擦桩基础3个月沉降已基本稳定,曲线已开始收敛;(3)架梁后3个月、路基堆载后5个月后,可以开始铺板施工,通过后期继续观测和验证,沉降均在规范允许的范围。The deformation patterns shown at about 50 000 settlement observation points at the bridges and roadbed along Harbin-Dalian line,the 2 million test data,the establishment of a mathematic model to conduct repression analysis,the trend of settlement and deformation,the change of settlement value of bridges and roadbed for a period of 6~8 months,the analysis and study on the change of settlement under accumulated load and overload have helped understanding the regular patterns of the settlement and deformation of bridges and roadbed of the railway line.The conclusions of the study are(1) the settlement has become basically stable after 6 month of constant load of bridges and roadbed,and relevant indexes meet the specification;(2) the settlement of bridge friction pile has become substantially stable,and the curve has started convergence;(3) slabs can be laid 3 months after bridges and 5 months after roadbed with load accumulation,the settlement has been proved acceptable by later continuous observations and tests.

关 键 词：哈大客运专线 沉降变形 研究 

分 类 号：U238[交通运输工程—道路与铁道工程] U213.1+57